Screw cap



W. J. PEELLE SCREW CAP Filedl Jan. 15, 1925 Patented en. ll., i923.

orifice.'

"WILLXS J'. PEELLE, OF CHICAGO, ILLINOIS,

sonnw car. l Y

Application filed January 13, 1923. Serial No.. 612,472.

To aZZwwm it may concern Be it known that l, WILLIS J. Psaum, a

vcitizen of the United' States., residing at Chicago, in `the county of Cook and State of lllinois, have inventedy a certain new and useful Screw CainI of which the following is a specification. v

The invention. 'pertains to-screw caps or closures for glass containers, such as pack ers jars, and the general 'aim of the inven* tion is to facilitate the removal of screw caps lments or protuberances in the fiange of the cap transversely of the screw thread and at spaced intervals throughout the circumference of the cap, theportions thus formed serving when flattened out to increase the eilective circumference ofy the flange' and` also effecting arelease of the grip of the thread upon the thread of the container.

' ln the accompanying drawings, Figure 1 is a side elevational new of a cap constructed in accordance with my invention and showing o" Ward enlargements in the flange of the cap formed upon the top as well as the bottom of the thread and arranged in alinement. Fig. 2 is a horizontal sectional view taken in the plane of line 2-2` ofwFig. l. 'p

Fig. 3 is a side elevational view showing the protuberances alternating on the'top and bottom of the' thread. Fig. 4 is a horizontal sectional view taken in theV plane of line t-4 .of Fig. 3. Fig.` 5 is a fragmentary sec-l tional view corresponding to Fig. 4, but

showing the top of the thread provided with I metalemployed :in t e cap, the size of the an inward enlargement. y

My invention is applicable to screw caps `of the usual and ordinary construction, consisting of a main or top wall 7 having a peripheral flange 8 which is shaped by means of suitable dies to' form a' rounded Athread appearing both upon the inside and-outside of the, flange, the top of the thread onthe inside of the cap formin the'botte'm of the thread on ,the outside o' the cap, and vice4 vtom by the numeral l0. The to ,[ciently to produce a flatteningl versa. For convenience I herein refer to the to ing designated by the numeral 9 and the bot` of the thread thus engages with the nec of the I jar between adjacent convolutions of the thread formed thereon, and the bottoni of the thread engages with the top of the jar. thread. K

The flange 8 -as shown in Fig. .1, is provided at spaced points throughout its circumferen'ccs upon its inner side, 'withrecesses or grooves extending transversely of the thread and formingl two outwardly extending protuberances 11 and 11, one in. the bottom and one in the top of the thread but in longitudinal alinement. In the construction shown in Fig'. 3 separate andbottom of the thread viewed from 't e inner side of the ilange, the top be.

While the enlargements thus 'formed project outwardly, it will be obvious that the construction may be reversed. Thus in Fig.

5 I have shown an inward enlargement 13 formed in the. top only7 of the thread.

It will be observed that theei'ect of the enlargements thus formed in the thread ofthe cap is to provide spaces between the" cap and the thread on the neck 0f the container, land that b" ,simply tapping lupon the outwardprotuberanues 11, llt and 12, i l2, or'upon the top or the thread at the sides of the inward enlargement 13,. suffieffect, the metal will be expanded and release of the grip of the lflange upon the neck of ythe vessel. Y

'Obviously the raised. ortions or protuber-f ances may be spaced bout the circumference ofthe flange as desired. The' number thereof employed .will depend {ipon the size and depth of the ca the thickness of the thread, and thel size of the enlargement.

.It will be seen that I have produced s..-

' 1. A cap for closure having a flangeV formed with a screw vthread whereby it may ue etl'ect al be screwed onto the threaded 'neck of a' Y container, the flange havingr 'formed therein at'spaeetl points .in its peripherxv enlargements in the top and bottoni of the thread adapted when flattened to increase the ef .fective circumference thereof. A cap or closure havinel- [a flange, formed with a screw thread whereh)v itanay be. screwed onto the threaded neck in a container, the flangehaving;` formed th Arein at; spaced points in its periphery prottiherances in the top of the thread adapted when flattened to increase the effective size of the thread circumferentially.of the container. A cap or cloeure having; a flange formed with a Screw thread wherelrv. i1 may be screwed onto the threaded neck of a con tainer, 'the flange having l'oruied thereinr at spaced points in itel peripher)v protuherances in the bottoni o'tthe thread adapted when flattened to increase the effective size of the. thread Cireuxnt'ertuitially'ol' the container.

4. Af cap or closure havingr a flange formed with a screw thread whereby it; may he screwed onto the threaded neck of a container, the flange having formed therein at'spaced points in its periphery outward enlargements in the liottom of the thread adapted when flattened to loosen the rap from the container.

5. A screw cap Iliade of sheetY metal and having its thread interrupted h v an enlargenient projecting,r out of the normal path ofthe thread and adapted to he flattened whereby to increase the effective circumference of the thread and release iterx-ip upon the thread 'of the container In testimony whereol". I have hereunto affixed my signature.

VVLLIS J. Plilihldl. 

